A junction box for a cabin-scrubbing spray pump

Abstract

The application discloses a kind of connection boxes for cabin-sweeping spray pump, it is related to the field of pump body equipment, it includes the connection box body of being fixedly installed on the surface of cabin-sweeping spray pump;The connection box body is used to protect the connecting place of cabin-sweeping spray pump wire harness and external power supply wire harness;The insulating seat for insulation is fixedly arranged in the inside of the connection box body, and a plurality of connecting busbars for the connection of the conductive of cabin-sweeping spray pump wire harness and external power supply wire harness are fixedly arranged on the surface of insulating seat, and the connecting plate for the cabin-sweeping spray pump wire harness to pass through is embedded and sealed in the connecting place of the connection box body and cabin-sweeping spray pump.This device can conveniently and quickly install cabin-sweeping spray pump at the bottom of cabin, operation is simpler, and also increase the connecting strength between cable and cabin-sweeping spray pump.

Description

Technical Field

[0001] This application relates to the field of pump equipment, and in particular to a junction box for a sweeping spray pump. Background Technology

[0002] The tank cleaning / spraying pump is a vertical multistage submersible pump, mainly used when the main cargo pump cannot discharge LNG cargo at a lower liquid level. In addition, during loading or navigation, it is also used to supply liquefied natural gas to the spray tower for cooling of the cargo tank space.

[0003] When draining cryogenic liquid from the tank, the main cargo pump is used first. The main cargo pump is large and has a fast extraction speed. However, it is difficult for the main cargo pump to extract small amounts of cryogenic liquid from the bottom of the tank. In this case, a smaller tank cleaning pump is used. The tank cleaning pump is also called a tank cleaning spray pump. The pump set has support seats on both sides. The support seats are fixed on the base to extract cryogenic liquid.

[0004] When modern tank cleaning and spraying pumps are installed inside the ship's hold, their power supply cable is always connected to the pump's terminals. Due to the large space inside the hold, at least 30 meters of cable is suspended in the air, which puts a lot of tension on the pump, making installation very difficult. Summary of the Invention

[0005] To address the difficulty in installing a tank cleaning spray pump, this application provides a junction box for a tank cleaning spray pump.

[0006] The junction box for a tank cleaning spray pump provided in this application adopts the following technical solution:

[0007] A junction box for a cabin cleaning spray pump includes a junction box body fixedly installed on the surface of the cabin cleaning spray pump;

[0008] The junction box is used to protect the connection points of the sweeping spray pump wiring harness and the external power supply wiring harness.

[0009] The junction box is equipped with an insulating base for insulation and several connecting busbars for connecting the sweeping spray pump wiring harness and the external power supply wiring harness to conduct electricity. The junction box and the sweeping spray pump are connected and sealed with a connecting plate for the sweeping spray pump wiring harness to pass through.

[0010] A junction box cover is fixedly installed at the opening of the junction box.

[0011] By adopting the above technical solution, the junction box is pre-installed on the hull cleaning spray pump, which allows the device to be installed on the bottom of the hull quickly and easily, making the operation simpler and increasing the connection strength between the cable and the hull cleaning spray pump.

[0012] Preferably, at least three connecting busbars are provided, and are respectively set as "U", "V", and "W". A cable that penetrates through the side wall of the wiring box body movably is fixedly provided on the surface of each connecting busbar, and a wire harness connected to the internal motor of the tank cleaning spray pump is fixedly provided on the surface of each connecting busbar.

[0013] By adopting the above technical solution, the connecting busbar plays a role of中转集线, and further realizes the transmission of electric power, facilitating the connection of the cable and the motor wire harness.

[0014] Preferably, a cable seat is fixedly provided on one side of the wiring box body surface where the cable is located, and a cable clamp adapted to the cable seat is fixedly provided on the other side of the wiring box body surface where the cable is located. The cable seat and the cable clamp can clamp and fix the cable and seal it.

[0015] By adopting the above technical solution, arc-shaped grooves are respectively formed on the opposite sides of the cable seat and the cable clamp. The radii of the two arc-shaped grooves are the same as the radius of the cable and form a wire-passing hole. The cable is located in the wire-passing hole, so that the fixation is more firm. Moreover, a corrosion-resistant and low-temperature sealing ring can be provided on the surface of the arc-shaped groove to prevent liquid from leaking into the wiring box body.

[0016] Preferably, the connecting plate is set as a "mountain" shape, and each protruding part of the connecting plate is set as a hollow cylinder.

[0017] By adopting the above technical solution, the setting of the connecting plate can seal three wire harnesses at one time, which is convenient for installation. At the same time, the round holes on the outer periphery of the connecting plate are designed for lightweight.

[0018] Preferably, annular grooves corresponding to the protruding parts of the connecting plate are formed on the surface of the tank cleaning spray pump, and the protruding parts of the connecting plate are inserted into the interior of the annular grooves.

[0019] By adopting the above technical solution, the annular groove has a limiting and guiding effect on the protruding part, and the V-shaped sealing ring or O-shaped sealing ring of the sealing component can be extruded through the protruding part to achieve the sealing effect.

[0020] Preferably, a sealing component for sealing is filled between the protruding part of the connecting plate and the bottom of the annular groove.

[0021] By adopting the above technical solution, the extrusion of the protruding part and the limitation of the annular groove can make the sealing component deform to achieve sealing.

[0022] Preferably, the sealing component is used to fill the gap between the wire harness of the tank cleaning spray pump and the tank cleaning spray pump.

[0023] By adopting the above technical solution, the design of the sealing component is used to increase the anti-leakage ability of the assembly gaps of each structure.

[0024] Preferably, each protrusion of the connecting plate corresponds to a connecting busbar.

[0025] By adopting the above technical solution, the protrusion of the connecting plate corresponds to the connecting busbar, making it easy to insert into the annular groove.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The junction box is fixed to the hull cleaning spray pump beforehand, without installing the cable. The hull cleaning spray pump is installed at the bottom of the hull. The absence of cable restrictions makes the installation of the hull cleaning spray pump more convenient and faster. After installation, the cable is installed in the junction box, which also fixes the cable and increases the tensile strength of the cable and the connection terminal of the hull cleaning spray pump. Attached Figure Description

[0028] Figure 1 This is a schematic diagram showing the connection between the sweeping spray pump and the junction box in this application;

[0029] Figure 2 This is a schematic cross-sectional view of the junction box of this application;

[0030] Figure 3 This is a side sectional view of the sweeping spray pump and wiring box of this application;

[0031] Figure 4 This is a top view of the present application;

[0032] Figure 5 This is a schematic diagram of the junction box and connection plate installation in this application;

[0033] Figure 6 This is a schematic diagram of the installation of the O-ring seal and the annular groove in this application;

[0034] Figure 7 This is a schematic diagram of the installation of the V-shaped seal ring and the annular groove in this application;

[0035] Figure 8 This is a schematic diagram showing the separation of the connection plate and the junction box in Embodiment 1 of this application;

[0036] Figure 9 This is a schematic diagram of the connection plate in Embodiment 2 of this application.

[0037] Attached reference numerals: 1. Sweeping spray pump; 2. Junction box; 3. Cable clamp; 4. Insulating base; 5. Connecting busbar; 6. First bolt; 7. Second bolt;

[0038] 8. Third bolt; 9. Cable; 10. Cable holder; 11. Fourth bolt; 12. Fifth bolt; 13. Sixth bolt; 14. Junction box cover; 15. Seventh bolt;

[0039] 16. Connecting plate; 17. V-ring seal; 18. Eighth bolt; 19. Wire hole; 20. Ninth bolt; 21. O-ring seal; 22. Annular groove. Detailed Implementation

[0040] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0041] This application discloses a junction box for a cabin cleaning spray pump.

[0042] Example 1

[0043] Reference Figure 1 A junction box for a cabin cleaning spray pump includes a junction box body 2 fixedly installed on the surface of a cabin cleaning spray pump 1. Seventh bolts 15 are installed through both sides inside the junction box body 2. The shank of the seventh bolts 15 is threadedly fixed to the cabin cleaning spray pump 1. The junction box body 2 is made of stainless steel.

[0044] The junction box 2 is used to protect the wiring harness of the sweeping spray pump 1 and the connection points of the external power supply wiring harness.

[0045] Reference Figure 2 , Figure 3 The bottom wall of the junction box 2 is fixed to both ends of the insulating base 4 by the eighth bolt 18. The head of the eighth bolt 18 is located on the outside of the junction box 2. The insulating base 4 is used for electrical insulation and has several conductive connecting busbars 5 fixed to the surface of the insulating base 4 by the first bolt 6. The connecting busbars 5 are used for connecting the sweeping spray pump 1 wiring harness and the external power supply wiring harness. The connecting busbars 5 are made of copper and are L-shaped. There are at least three connecting busbars 5, and the three connecting busbars 5 correspond to the "U", "V" and "W" items respectively. The surface of each connecting busbar 5 is fixed with a cable 9 by the third bolt 8. One end of each of the three cables 9 movably passes through the side wall of the junction box 2, and the cable 9 and the side wall of the junction box 2 are sealed by a sealing ring. The sweeping spray pump 1 includes a motor and other structures inside. The surface of each connecting busbar 5 is fixed with a wiring harness connected to the motor inside the sweeping spray pump 1 by the second bolt 7.

[0046] During equipment manufacturing, the junction box 2 is first fixed to the hull cleaning spray pump 1 with the seventh bolt 15. Then, the wiring harness connecting the motor is fixed to the middle of the connecting busbar 5 with the second bolt 7. It should be noted that before the hull cleaning spray pump 1 is installed inside the hull, it is not necessary to connect and fix the cable 9 to the connecting busbar 5, so as to achieve the effect of separate assembly of the cable 9 and the junction box 2. The motor is set as a three-phase motor, and the wiring harnesses all pass through the housing of the hull cleaning spray pump 1 and the junction box 2 and are fixed to their respective connecting busbars 5.

[0047] The insulating base 4 is preferably made of epoxy resin.

[0048] Reference Figure 3 A sealing assembly is used to fill the gap between the protrusion of the connecting plate 16 and the bottom of the annular groove 22. The sealing assembly is used to fill the gap between the sweeping spray pump 1 wiring harness and the sweeping spray pump 1. The sealing assembly is configured as a V-shaped sealing ring 17 and an O-shaped sealing ring 21 (e.g., Figure 6 As shown), a V-shaped sealing ring 17 is preferred, and multiple V-shaped sealing rings 17 are stacked and deformed relative to each other to achieve a sealing effect.

[0049] Reference Figures 2-4 , Figure 7 , Figure 8 A sealing connection plate 16 is embedded at the connection between the junction box 2 and the cleaning spray pump 1. The two ends of the connection plate 16 are fixed to the junction box 2 by the ninth bolt 20. Specifically, the rod of the ninth bolt 20 moves through the junction box 2 and is threaded to the cleaning spray pump 1. The connection plate 16 allows the three wire harnesses of the cleaning spray pump 1 to pass through side by side. The connection plate 16 is set in the shape of a "mountain" and each protrusion of the connection plate 16 is arranged in parallel. Each protrusion is a hollow cylinder. Three parallel annular grooves 22 are opened on the surface of the cleaning spray pump 1. The three annular grooves 22 correspond one-to-one with the protrusions of the connection plate 16. The protrusions of the connection plate 16 are inserted into one-third of the annular groove 22 and the surface of the protrusion abuts against the inner wall of the annular groove 22. Each protrusion of the connection plate 16 corresponds to the connecting busbar 5. A sealing gasket is provided between the connection plate 16 and the junction box 2.

[0050] The user fixes the junction box 2 to the cleaning spray pump 1. Then, multiple V-shaped sealing rings 17 are stacked and installed inside the annular groove 22. The protrusion of the connecting plate 16 is then inserted into the annular groove 22 and abuts against the V-shaped sealing rings 17. The connecting plate 16 is then fixed to the cleaning spray pump 1 by the ninth bolt 20. As the connecting plate 16 moves toward the cleaning spray pump 1, the protrusion of the connecting plate 16 compresses the multiple V-shaped sealing rings 17, causing the multiple V-shaped sealing rings 17 to deform and fill the gap between the wire harness and the housing of the cleaning spray pump 1, thereby achieving a sealing and waterproof effect.

[0051] Reference Figure 3 The two sides of the opening of the junction box 2 are bolted to the junction box cover 14 by the sixth bolt 13, and a sealing gasket is provided at the contact point between the junction box 2 and the junction box cover 14 to achieve a waterproof effect.

[0052] Reference Figures 2-5A cable seat 10 is fixed to one side of the cable 9 on the surface of the junction box 2 by a fourth bolt 11. At least two fourth bolts 11 are provided. The shank of the fourth bolt 11 moves through the cable seat 10 and the side wall of the junction box 2. A nut is provided inside the junction box 2 and is threaded to the shank of the fourth bolt 11, so that the nut abuts against the surface of the junction box 2 to achieve the effect of fixing. A cable clamp 3 is fixed to the other side of the cable 9 on the surface of the junction box 2. The cable clamp 3 is adapted to the cable seat 10. The cable seat 10 and the cable clamp 3 can clamp, fix and seal the cable 9. Specifically, a fifth bolt 12 is horizontally inserted on both sides of the cable clamp 3. The positions of the fifth bolt 12 are all away from the position of the cable 9, so that the shank of the fifth bolt 12 is threaded to the cable seat 10. At least three wire holes 19 are formed between the cable seat 10 and the cable clamp 3.

[0053] It should be noted that all gaps created by the splicing of this device are sealed with corrosion-resistant and low-temperature-resistant sealing rings for waterproofing, and these are existing well-known technologies that will not be described in detail here.

[0054] The implementation principle of the junction box for the scavenging spray pump in this application embodiment is as follows: when manufacturing the scavenging spray pump 1, the junction box body 2 is installed on the scavenging spray pump 1, and the wire harness of the scavenging spray pump 1 is passed through the annular groove 22, the V-shaped sealing ring 17 and the protrusion of the connecting plate 16, and then fixed to the connecting busbar 5 by the second bolt 7.

[0055] After the cleaning spray pump 1 is installed at the bottom of the cabin, the installer will then pass the external power supply cable 9 through the junction box 2 and fix it to the connecting busbar 5 with the third bolt 8. Then, the cable clamp 3 will be connected and fixed to the cable seat 10 with the fifth bolt 12, and the cable 9 will be clamped and fixed to increase the tensile strength of the cable 9.

[0056] Subsequently, the installers used the sixth bolt 13 to install and fix the junction box cover 14 onto the junction box body 2.

[0057] Therefore, this device allows for convenient and quick installation of the hull cleaning spray pump 1 at the bottom of the hull, making operation simpler and increasing the connection strength between the cable 9 and the hull cleaning spray pump 1.

[0058] Example 2

[0059] Please refer to Figure 9The difference from the embodiment is that the structure of the connecting plate 16 can also be set as three "T" shaped column sleeves, which correspond to the three phases respectively. At least four ninth bolts 20 are wrapped around each protrusion of the connecting plate 16, and the rods of the multiple ninth bolts 20 are threaded to the sweeping spray pump 1. The setting of the ninth bolts 20 further increases the sealing and connection strength between the connecting plate 16 and the sweeping spray pump 1. The installation of the ninth bolts 20 also requires the use of elastic gaskets.

[0060] The protrusion of each connecting plate 16 passes through the hole in the side wall of the junction box 2. Then, the shank of the ninth bolt 20 is inserted into the mounting hole around each connecting plate 16 and the shank of the ninth bolt 20 is threadedly fixed to the sweeping spray pump.

[0061] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A junction box for a sweeping spray pump, characterized in that: It includes a wiring box body (2) fixedly installed on the surface of the stripping spray pump (1); The wiring box body (2) is used to protect the connection part of the wiring harness of the stripping spray pump and the external power supply wiring harness; An insulating seat (4) for insulation and several connection buses (5) for conducting electricity of the wiring harness of the stripping spray pump and the external power supply wiring harness are fixedly installed inside the wiring box body (2). A connecting plate (16) through which the stripping spray pump wiring harness passes is embedded and sealed at the connection part between the wiring box body (2) and the stripping spray pump (1); A wiring box cover (14) is fixedly installed at the opening of the wiring box body (2); The connecting plate (16) is arranged in a "mountain" shape, and each protruding part of the connecting plate (16) is arranged as a hollow cylinder; A ring groove (22) corresponding to the protruding part of the connecting plate (16) is formed on the surface of the stripping spray pump (1), and the protruding parts of the connecting plate (16) are inserted into the inside of the ring groove (22); A sealing component for sealing is filled between the protruding part of the connecting plate (16) and the bottom of the ring groove (22).

2. The junction box for a tank cleaning spray pump according to claim 1, characterized in that: There are at least three connection buses (5), which are respectively arranged as "U", "V", and "W". A cable (9) that movably penetrates the side wall of the wiring box body (2) is fixedly installed on the surface of each connection bus (5), and a wiring harness connected to the internal motor of the stripping spray pump is fixedly installed on the surface of each connection bus (5).

3. The junction box for a tank cleaning spray pump according to claim 1, characterized in that: A cable seat (10) is fixedly installed on one side of the cable (9) on the surface of the wiring box body (2), and a cable clamp (3) adapted to the cable seat (10) is fixedly installed on the other side of the cable (9) on the surface of the wiring box body (2). The cable seat (10) and the cable clamp (3) can clamp and fix the cable (9) and seal it.

4. The junction box for a tank cleaning spray pump according to claim 1, characterized in that: The sealing component is used to fill the gap between the stripping spray pump wiring harness and the stripping spray pump (1).

5. The junction box for a tank cleaning spray pump according to claim 4, characterized in that: Each protruding part of the connecting plate (16) corresponds to the connection bus (5).

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